Specific as follows:
Blockchain @ ubuntu: ~/project/demo/react $truffle unbox react

Preparing to download
Downloading
Error: Error: Error: Error making the request to https://raw.githubusercontent.com/truffle-box/react-box/master/truffle-box.json. Got Error: read ECONNRESET. Both Please check the format of the requested resource.
At the Object. Unbox (/usr/local/lib/node_modules/truffle/build/webpack:/packages/truffle - box/box. Js: 65:1)
At the process. _tickCallback (internal/process/next_tick. Js: 68:7)
Truffle v5.0.0 (core: 5.0.0)
The Node v10.19.0

Don't know how to deal with?